UK CIS Domestic Reverse Charge VAT: Construction Guide 2026

The Construction Industry Scheme (CIS) Domestic Reverse Charge (DRC) is one of the most significant VAT rule changes to hit the UK construction sector in recent years. Introduced on 1 March 2021 after several delays, the DRC fundamentally changes who accounts for VAT on construction services -- shifting the responsibility from the supplier to the customer in business-to-business transactions within the CIS.

If you work in construction as a contractor, sub-contractor, or both, understanding DRC is essential. Getting it wrong can mean penalties, cash flow crises, and difficult conversations with HMRC.

What Is the Domestic Reverse Charge?

The Domestic Reverse Charge is a VAT accounting method where the recipient of a supply -- rather than the supplier -- accounts for the VAT due. Under normal VAT rules, a VAT-registered business charges VAT to its customer, collects the money, and pays it over to HMRC on their next VAT return. Under DRC, the supplier issues an invoice for the net amount only, and the customer declares both the output VAT (as if they had charged themselves) and the corresponding input VAT on the same return.

The practical effect is that no VAT cash changes hands between the supplier and customer at all. The customer's output and input tax entries cancel each other out (unless the customer has partial exemption or other restrictions). This design was HMRC's response to VAT fraud in the construction sector, where rogue sub-contractors were collecting VAT from contractors and then disappearing without paying it to HMRC -- a practice known as "missing trader fraud."

Who Does DRC Apply To?

DRC applies when ALL of the following conditions are met:

The supply is a CIS construction service. This covers the broad range of activities within CIS including: construction, alteration, repair, extension, demolition, or dismantling of buildings or structures; installation of heating, lighting, air conditioning, ventilation, power supply, drainage, sanitation, water supply, or fire protection systems; internal cleaning of buildings as part of a construction process; painting or decorating the inside or outside of buildings; and preparation of sites.

Both parties are VAT registered. If the customer is not VAT registered, normal VAT rules apply and the supplier charges VAT as usual.

The customer is registered for CIS. The customer must be a contractor under CIS -- they must be registered for the scheme and making construction supplies onward (or intending to). If the customer is an end user (a business that occupies the building themselves and does not make further CIS supplies), DRC does not apply.

The supply is not excluded. Certain services are excluded even if they are within CIS -- notably the zero-rated or exempt supplies are outside scope of DRC. Also excluded are supplies between landlords and tenants where the tenant is an end user.

The Critical Concept of "End Users"

One of the most common points of confusion is distinguishing between end users and businesses in the supply chain. An end user is a customer who receives construction services for their own occupation or use -- they do not make further supplies of those construction services to others.

For example, a supermarket chain that hires a building company to construct a new store is an end user. The supermarket does not sell on construction services. Therefore, the building company charges VAT normally on this contract.

Contrast this with a main contractor who hires a specialist electrical sub-contractor. The main contractor is supplying construction services to the supermarket (or whoever is the end client). The electrical sub-contractor's work is part of the supply chain. DRC applies between the electrical sub-contractor and the main contractor.

Customers who are end users should notify their suppliers in writing so the supplier knows to apply normal VAT. Suppliers should obtain and keep this notification on file.

Invoice Requirements Under DRC

When DRC applies, the supplier's invoice must make this clear. The invoice should:

• Show the net amount of the supply (with no VAT charged)
• State the VAT rate that would normally apply (e.g. "VAT rate 20%")
• Include the specific wording: "Reverse charge: VAT Act 1994 Section 55A applies"
• Optionally indicate the VAT amount the customer must account for (helpful but not mandatory)

A typical DRC invoice for £10,000 of sub-contractor work might read:

Labour and materials for groundworks: £10,000.00 VAT at 20%: £0.00 (Reverse charge -- VAT Act 1994 Section 55A applies. Customer to account for VAT of £2,000.00) Total due: £10,000.00

The customer then accounts for £2,000 output VAT and £2,000 input VAT on their own VAT return.

Cash Flow Impact on Sub-Contractors

Before DRC, sub-contractors collected VAT from their main contractor customers. This gave them a useful pool of float -- the difference between collecting VAT and paying it to HMRC on a quarterly return could amount to several months of working capital.

Under DRC, sub-contractors no longer collect VAT at all. This can create real cash flow pressure, particularly for smaller sub-contractors. A sub-contractor turning over £500,000 annually in CIS supplies might have previously held £100,000 in VAT float at any given time. That float has now gone.

Sub-contractors affected by DRC should consider switching to monthly VAT returns. HMRC allows any business to move to monthly VAT accounting on request. This means any VAT repayment due (for example, if the sub-contractor has input VAT on materials and plant) comes back monthly rather than quarterly, reducing the cash flow gap.

How Main Contractors Account for DRC

When a main contractor receives a DRC invoice, they must account for the VAT on their own return. This is done using:

• Box 1 (Output VAT): add the VAT amount that should have been charged
• Box 4 (Input VAT): add the same amount as recoverable input tax (subject to normal partial exemption rules)
• Box 6 (Net outputs): do NOT include the value of DRC purchases here
• Box 7 (Net inputs): include the net value of the DRC purchase

The effect on Box 1 and Box 4 should be equal and offsetting, resulting in no net VAT cost for fully taxable businesses. However, if the main contractor has any exempt activities (for example, if they also supply residential lettings), the DRC input tax may be partially blocked.

Interaction With CIS Deductions

It is important to keep DRC and CIS deductions separate in your mind -- they are entirely different systems that can both apply to the same payment.

Under CIS, a contractor paying a sub-contractor must deduct CIS tax at source (0% for gross payment status holders, 20% for those with CIS registration, 30% for those not registered with CIS). This deduction comes off the net labour element of the payment.

So a typical payment might look like:

• Net invoice amount: £10,000
• CIS deduction at 20% on labour portion (say £7,000 labour): £1,400
• Net payment to sub-contractor: £8,600
• VAT: not applicable (DRC applies -- no VAT in the payment at all)

The sub-contractor receives £8,600 but can offset the £1,400 CIS deduction suffered against their tax liability at year end. These are completely separate calculations from the DRC VAT position.

VAT Grouping and DRC

If two companies are in the same VAT group, supplies between them are disregarded for VAT purposes and DRC does not apply to intra-group transactions. However, if a VAT group member supplies construction services to an entity outside the group, normal DRC analysis applies.

Businesses considering VAT grouping partly to simplify DRC should take specialist advice, as VAT grouping has its own conditions and implications.

Intermediary Supplier Arrangements

Some businesses act as both customer and supplier in the construction chain -- they receive construction services from sub-contractors (under DRC) and supply those services as part of a larger project to a main contractor (also potentially under DRC). These are sometimes called "deemed contractors" or are businesses partway through the supply chain.

In these cases, the business self-accounts for DRC on what it receives from sub-contractors and issues DRC invoices itself to the contractor above it in the chain. This is the normal operation of the reverse charge -- it flows through each link of the chain below the end user.

Common Mistakes to Avoid

Several common errors occur repeatedly:

Charging VAT instead of applying DRC. The supplier charges 20% VAT on a DRC supply. The customer pays it, but cannot recover it as input tax because it was incorrectly charged. HMRC may assess the supplier for output VAT even if they have paid the money back to the customer.

Not obtaining end user confirmation. Assuming a customer is an end user without getting written confirmation. If the customer is actually in the supply chain, DRC should have applied.

Applying DRC to services outside CIS scope. Purely professional services (architects, surveyors, engineers) are not construction services under CIS and DRC does not apply to them.

Missing the AIF wording on invoices. Omitting the specific wording "Reverse charge: VAT Act 1994 Section 55A applies" means the invoice is technically non-compliant.

Mixing up DRC and CIS. Treating the CIS deduction as somehow connected to the DRC VAT treatment -- they are independent systems.

Frequently Asked Questions

Does DRC apply to zero-rated construction services? No. DRC only applies to standard-rated supplies. If the construction service itself is zero-rated (for example, new residential construction), DRC does not apply and the normal zero-rating rule means no VAT is charged regardless.

What happens if I get DRC wrong? If you charge VAT when DRC should apply, HMRC can require you to repay the VAT to them (meaning you are out of pocket if you have already refunded the customer). If you fail to apply DRC, HMRC may assess you for the output VAT due. Penalties can also apply.

Does DRC apply to materials as well as labour? DRC applies to the whole supply including materials where they form part of a construction contract. It is not limited to the labour element.

Can I still claim input tax on my materials as a sub-contractor under DRC? Yes. Sub-contractors still incur and recover input VAT on their own purchases (materials, plant, overheads) in the normal way. DRC only affects the output VAT they would have charged on their sales.

Does DRC apply to repairs and maintenance? Yes, repairs to buildings and structures are within the CIS scope and DRC applies where the other conditions (VAT registration, CIS registration, not end user) are met.

What about scaffolding? Scaffolding is a CIS activity and DRC can apply. However, purely the hire of scaffolding without erection may fall outside CIS scope -- check the specific facts.

I am a sole trader sub-contractor. Does DRC apply to me? Yes, if you are VAT registered and carrying out CIS supplies to a VAT-registered CIS contractor, DRC applies to you regardless of your legal structure.

How do I switch to monthly VAT returns? You can apply to HMRC online through your VAT online account. There is no fee and HMRC generally approves the change. Note that monthly returns mean more admin but faster repayments.

Does the VAT threshold affect DRC? DRC only applies if both parties are VAT registered. If your turnover is below £90,000 and you are not voluntarily registered for VAT, you charge no VAT and DRC is irrelevant to you. However, many sub-contractors are voluntarily registered specifically to recover input VAT on materials.

Can a main contractor refuse to apply DRC and insist on normal VAT? No. Where DRC legally applies, both parties are bound by it. A customer cannot waive DRC simply because it is administratively convenient. Both parties could face HMRC scrutiny if they deliberately ignore DRC requirements.